91921112 has 8 divisors (see below), whose sum is σ = 172352100. Its totient is φ = 45960552.

The previous prime is 91921103. The next prime is 91921121. The reversal of 91921112 is 21112919.

It is an interprime number because it is at equal distance from previous prime (91921103) and next prime (91921121).

It is a tau number, because it is divible by the number of its divisors (8).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5745062 + ... + 5745077.

Almost surely, 2^91921112 is an apocalyptic number.

It is an amenable number.

91921112 is a deficient number, since it is larger than the sum of its proper divisors (80430988).

91921112 is a wasteful number, since it uses less digits than its factorization.

91921112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11490145 (or 11490141 counting only the distinct ones).

The product of its digits is 324, while the sum is 26.

The square root of 91921112 is about 9587.5498434167. The cubic root of 91921112 is about 451.3066745370.

The spelling of 91921112 in words is "ninety-one million, nine hundred twenty-one thousand, one hundred twelve".